Problem 2350. What is Sum Of all elements of Matrix

Created by Vishal

Solve Later

{"relationships":[{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/document","targetMode":"","relationshipId":"rId1","target":"/matlab/document.xml"},{"relationshipType":"http://schemas.mathworks.com/matlab/code/2013/relationships/output","targetMode":"","relationshipId":"rId2","target":"/matlab/output.xml"}],"parts":[{"partUri":"/matlab/document.xml","relationship":[],"contentType":"application/vnd.mathworks.matlab.code.document+xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<w:document xmlns:w=\"http://schemas.openxmlformats.org/wordprocessingml/2006/main\"><w:body><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Given the matrix x, return the sum of all elements of matrix.</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"text\"/></w:pPr><w:r><w:t>Example:</w:t></w:r></w:p><w:p><w:pPr><w:pStyle w:val=\"code\"/></w:pPr><w:r><w:t><![CDATA[ Input  x = [ 1 2 0 0 0\n              0 6 9 3 3 ]\n Output y is 24.\n\n Input  x = [ 1 NaN 0 0 0\n              0 6 9 3 3 ]\n Output y is NaN.]]></w:t></w:r></w:p></w:body></w:document>"},{"partUri":"/matlab/output.xml","contentType":"text/xml","content":"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?><embeddedOutputs><metaData><evaluationState>manual</evaluationState><layoutState>code</layoutState><outputStatus>ready</outputStatus></metaData><outputArray type=\"array\"/><regionArray type=\"array\"/></embeddedOutputs>"}]}

Solve

Solution Stats

418 Solutions
326 Solvers

Last Solution submitted on Dec 06, 2021

Last 200 Solutions

Problem Comments

6 Comments

6 Comments

Show 3 older comments

Guillaume on 8 Sep 2014

isequal(NaN, NaN) always return false. By definition Nans are not equal to each other. If you want test that a result is NaN, either use isnan, or use isequaln

Grzegorz Knor on 8 Sep 2014

The problem is unsolvable due to the second test.

Zikobrelli on 8 Sep 2014

isequalwithequalnans

Abdullah Caliskan on 8 Sep 2014

I agree guys! something wrong

J.R.! Menzinger on 8 Sep 2014

please use the function: isequalwithequalnans
;-)

Ned Gulley on 9 Sep 2014

Thanks for the suggestions. I fixed with isequalwithequalnans.

Problem Recent Solvers326

Problem Tags

basic matlab matrices

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Problem 2350. What is Sum Of all elements of Matrix

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers326

Suggested Problems

More from this Author6

Problem Tags

Community Treasure Hunt

Problem 2350. What is Sum Of all elements of Matrix

Solution Stats

Last 200 Solutions

Problem Comments

Problem Recent Solvers326

Suggested Problems

More from this Author6

Problem Tags

Community Treasure Hunt

Players